On chain casinos are blockchain-based gambling platforms where core gaming operations such as bets, game logic, randomness, and payouts are executed and recorded directly on the blockchain. Unlike traditional online casinos that rely on centralized servers and opaque systems, on chain casinos use smart contracts to automate gameplay and payouts in a transparent, tamper-proof manner.
At the heart of on chain casinos are smart contracts. These self-executing programs run on blockchains like Ethereum, BNB Chain, Polygon, Solana, or other smart contract–enabled networks.
Here’s a simplified breakdown of how on chain casinos operate:
Wallet Connection
Players connect a crypto wallet (such as MetaMask or Phantom) instead of creating a traditional account.
Placing Bets On Chain
When a bet is placed, the transaction is sent to the blockchain and handled by a smart contract.
Provably Fair Game Logic
Randomness is generated using verifiable on-chain or oracle-based mechanisms, ensuring fairness.
Instant Crypto Payouts
If the player wins, the smart contract automatically sends winnings to the player’s wallet—no manual approval required.
Public Verification
All outcomes and payouts can be independently verified on the blockchain explorer.
One of the biggest advantages of on chain casinos is trustless operation. Players don’t need to trust a company, operator, or third party. The rules are encoded into smart contracts and cannot be altered after deployment.